Preparation:1. In a medium sized pan brown the onion in a pan with the butter.2. Add the courgettes and the Dorot garlic cubes.3. Add the water, season with salt & pepper and the nutmeg.4. Bring to the boil and cook on a low heat for approximately 40 minutes.5. Blend the soup in a food processor until smooth, check the seasoning and return to the heat.6. To prepare the pesto, blend all the ingredients together in a food processor or using a hand-held blender until thoroughly mixed.7. Pour the soup into dishes and pour the pesto gently on top and serve.